1 # Copyright 2012 GRNET S.A. All rights reserved.
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4 # without modification, are permitted provided that the following
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37 from image_creator.os_type import OSBase, sysprep
42 sensitive_userdata = [
50 def __init__(self, rootdev, ghandler, output):
51 super(Unix, self).__init__(rootdev, ghandler, output)
53 self.meta["USERS"] = " ".join(self._get_passworded_users())
54 # Delete the USERS metadata if empty
55 if not len(self.meta['USERS']):
56 self.out.warn("No passworded users found!")
57 del self.meta['USERS']
60 def _get_passworded_users(self):
62 regexp = re.compile('(\S+):((?:!\S+)|(?:[^!*]\S+)|):(?:\S*:){6}')
64 for line in self.g.cat('/etc/shadow').splitlines():
65 match = regexp.match(line)
69 user, passwd = match.groups()
70 if len(passwd) > 0 and passwd[0] == '!':
71 self.out.warn("Ignoring locked %s account." % user)
77 @sysprep(enabled=False)
78 def remove_user_accounts(self, print_header=True):
79 """Remove all user accounts with id greater than 1000"""
82 self.out.output("Removing all user accounts with id greater than "
85 if 'USERS' not in self.meta:
88 # Remove users from /etc/passwd
91 metadata_users = self.meta['USERS'].split()
92 for line in self.g.cat('/etc/passwd').splitlines():
93 fields = line.split(':')
94 if int(fields[2]) > 1000:
95 removed_users[fields[0]] = fields
96 # remove it from the USERS metadata too
97 if fields[0] in metadata_users:
98 metadata_users.remove(fields[0])
100 passwd.append(':'.join(fields))
102 self.meta['USERS'] = " ".join(metadata_users)
104 # Delete the USERS metadata if empty
105 if not len(self.meta['USERS']):
106 del self.meta['USERS']
108 self.g.write('/etc/passwd', '\n'.join(passwd) + '\n')
110 # Remove the corresponding /etc/shadow entries
112 for line in self.g.cat('/etc/shadow').splitlines():
113 fields = line.split(':')
114 if fields[0] not in removed_users:
115 shadow.append(':'.join(fields))
117 self.g.write('/etc/shadow', "\n".join(shadow) + '\n')
119 # Remove the corresponding /etc/group entries
121 for line in self.g.cat('/etc/group').splitlines():
122 fields = line.split(':')
123 # Remove groups tha have the same name as the removed users
124 if fields[0] not in removed_users:
125 group.append(':'.join(fields))
127 self.g.write('/etc/group', '\n'.join(group) + '\n')
129 # Remove home directories
130 for home in [field[5] for field in removed_users.values()]:
131 if self.g.is_dir(home) and home.startswith('/home/'):
135 def cleanup_passwords(self, print_header=True):
136 """Remove all passwords and lock all user accounts"""
139 self.out.output("Cleaning up passwords & locking all user "
144 for line in self.g.cat('/etc/shadow').splitlines():
145 fields = line.split(':')
146 if fields[1] not in ('*', '!'):
149 shadow.append(":".join(fields))
151 self.g.write('/etc/shadow', "\n".join(shadow) + '\n')
154 def cleanup_cache(self, print_header=True):
155 """Remove all regular files under /var/cache"""
158 self.out.output('Removing files under /var/cache')
160 self.foreach_file('/var/cache', self.g.rm, ftype='r')
163 def cleanup_tmp(self, print_header=True):
164 """Remove all files under /tmp and /var/tmp"""
167 self.out.output('Removing files under /tmp and /var/tmp')
169 self.foreach_file('/tmp', self.g.rm_rf, maxdepth=1)
170 self.foreach_file('/var/tmp', self.g.rm_rf, maxdepth=1)
173 def cleanup_log(self, print_header=True):
174 """Empty all files under /var/log"""
177 self.out.output('Emptying all files under /var/log')
179 self.foreach_file('/var/log', self.g.truncate, ftype='r')
181 @sysprep(enabled=False)
182 def cleanup_mail(self, print_header=True):
183 """Remove all files under /var/mail and /var/spool/mail"""
186 self.out.output('Removing files under /var/mail & /var/spool/mail')
188 self.foreach_file('/var/spool/mail', self.g.rm_rf, maxdepth=1)
189 self.foreach_file('/var/mail', self.g.rm_rf, maxdepth=1)
192 def cleanup_userdata(self, print_header=True):
193 """Delete sensitive userdata"""
195 homedirs = ['/root'] + self.ls('/home/')
198 self.out.output("Removing sensitive user data under %s" %
201 for homedir in homedirs:
202 for data in self.sensitive_userdata:
203 fname = "%s/%s" % (homedir, data)
204 if self.g.is_file(fname):
205 self.g.scrub_file(fname)
207 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :